Nursing care

ABCs of Prioritization, explained for the bedside and the exam

Written and reviewed by Dana Whitfield, RN, MSN · 4 min read · Updated September 2026

Short answer

The ABCs of prioritization mean airway, breathing, circulation, addressed in that order before any other need. When a question presents two problems, the one higher on the ABC list wins, even if a psychosocial or safety issue looks more urgent. The ABCs override Maslow's hierarchy whenever the two frameworks disagree.

The idea in one paragraph

Airway comes first, then breathing, then circulation. Nothing else matters if the patient cannot move air or has no pulse. The ABCs give a fixed order for physiological threats, and that order does not bend for comfort, dignity, or emotional distress, however real those needs are.

The framework exists because untreated airway compromise kills in minutes, breathing failure kills in minutes to an hour, and circulatory collapse kills within the hour if untreated. Ranking by speed to death is the whole logic. A patient who is anxious about a diagnosis can wait ninety seconds for reassurance. A patient whose airway is closing cannot.

Why it matters clinically

Maslow's hierarchy places physiological needs at the base, but within that base there is no further ranking, it treats hunger, thirst, and breathing as equally foundational. The ABCs supply the ranking Maslow leaves out. When two physiological problems compete for the nurse's next action, ABCs decide which one is addressed first, not the order the needs were mentioned in the chart or the room.

In practice this means a nurse walking into a room with a patient who is stridulous and a second patient who is hypotensive attends to the airway first, even though hypotension looks more dramatic on a monitor. A closing airway has no reserve. A blood pressure of 82/50 usually has minutes, not seconds, before it becomes unrecoverable.

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How to apply it at the bedside

Start every rapid assessment by asking whether the airway is patent, whether the patient is breathing adequately, and whether there is a perfusing rhythm and pulse, in that order, before moving to any other system. This is not a documentation exercise, it changes which task the nurse's hands do next.

When two patients or two problems compete, work down the list: an airway problem outranks a breathing problem, a breathing problem outranks a circulation problem, and a circulation problem outranks everything that is not A, B, or C, including pain, anxiety, mobility, and skin integrity. A dropping oxygen saturation with adequate air movement is a breathing problem, not an airway problem, and gets treated as such.

Where students get it wrong

The most common error is answering the emotionally loudest option instead of the physiologically first one. A tearful patient asking for the chaplain reads as urgent, but it sits below every unaddressed A, B, or C problem in the same scenario, no exceptions.

The second error is treating Maslow and ABCs as separate systems to weigh against each other. They are not equals. ABCs sit inside the physiological base of Maslow's pyramid and outrank every other tier of that pyramid, safety, love and belonging, esteem, self-actualisation, whenever an A, B, or C problem is present. Students who try to balance a safety need against a breathing problem have already misread the question.

Worked examples

A patient post-thyroidectomy reports tightness in the throat and a change in voice, alongside a family member asking to speak with the nurse about discharge planning. The voice change and throat tightness signal airway compromise, hematoma or edema, and take priority over any conversation, however pressing it feels to the family.

A patient with a tension pneumothorax has tracheal deviation and absent breath sounds on one side, while a second patient down the hall has a heart rate of 130. The tension pneumothorax is a breathing and developing circulation emergency, and outranks isolated tachycardia unless that tachycardia comes with signs of shock, in which case both are ranked by which threatens circulation first.

How the exam tests it

NCLEX-style questions rarely name the ABCs directly. They present two or more findings and ask which the nurse addresses first, expecting the test-taker to rank the findings against airway, breathing, and circulation without being told the framework by name. Read every option for airway or breathing language before considering anything else.

Distractor options are usually built around Maslow's higher tiers, safety, comfort, psychosocial support, dressed up to sound urgent. The correct answer is almost always the option describing an unaddressed A, B, or C problem, even when it is phrased quietly. If no option describes an A, B, or C problem, then and only then does Maslow's ranking decide the answer.

The next step on this is the same as on everything else here: answer questions and read the rationales. Our fundamentals practice questions are the closest set to what this page covers.

Common questions

Do the ABCs ever come after Maslow's hierarchy?

No. Airway, breathing, and circulation problems sit inside the physiological base of Maslow's pyramid and outrank every higher tier whenever one is present. Maslow only decides the answer when no ABC problem exists in the scenario.

How do I know if a question is testing airway versus breathing?

Airway problems involve obstruction or the risk of obstruction, stridor, drooling, a muffled voice, tracheal deviation. Breathing problems involve adequacy of gas exchange once the airway is open, rate, depth, oxygen saturation, use of accessory muscles. Treat the airway problem first if both are present.

What if two patients both have a circulation problem?

Compare severity and trajectory, not just the category. A patient in frank shock with hypotension and altered mentation outranks a patient with isolated tachycardia and a normal blood pressure, because the first is closer to decompensation.

Does pain ever outrank the ABCs?

No. Pain management always comes after any unaddressed airway, breathing, or circulation problem, regardless of how severe the pain sounds in the stem.